Pneumotachometers are instruments that measure the instantaneous rate of volume flow of respired gases. They can be broadly classified into two types based on the principle of operation:
In a Biomedical measurement system, the electrodes pick up the bioelectrical potential whereas the transducer converts the physiological signal to be measured into a usable electrical output. The outputs from the Bioelectrodes/transducers are then converted into an electrical quantity that … Read More
Some of the important factors that are considered when designing a medical measuring instrument include:
The blood pressure is considered a good indicator of the status of the cardiovascular system. The blood pressure can be measured by:
Examples of indirect methods of blood pressure … Read More
Blood flow can easily be measured by using biomedical instruments. These biomedical instruments are based on several working principles namely:
The magnetic and ultrasound blood flow meters actually measure the … Read More
Recorders provide permanent visual trace or record of an applied electrical signal. The most basic electronic recording system consists of 3 important components:
The electrode picks up the bioelectric potentials whereas the transducer converts the … Read More
Bioelectric events have to be picked up from the surface of the body before they can be put to the amplifier for subsequent record or display. This is done by use of electrodes. The potentials produced at different points … Read More
Biomedical signals/physiological signals are those signals (phenomenon that conveys information) which are used primarily for extracting information on a biological system under investigation. Our body produces various physiological signals. The accessibility to these signals is important because these signals:
Biomedical Instrumentation deals with the measurement and analysis of current or voltage signals from different parts of the body. The human body generates a variety of voltages which are usually very small. Biomedical instrumentation helps medical personnel or physicians … Read More
